Lock



E. L. TEICH LOCK Filed Dec. 12, 1946 ERNEST L,. TE/Cl-I Patented Aug. 9,1949 LOCK Ernest L. Teich, New Britain, Conn., assignor to The AmericanHardware Corporation, New Britain, Conn., a corporation of Connecticut.

Application December 12, 1946, Serial No. 715,671

The present invention relates to door locks and latches, and has for itsobject to provide novel and improved means for locking and unlocking theouter knob from the inside of the door.

The invention is illustrated, by way of example, in the accompanyingdrawings, in which:

Figure 1 is a longitudinal sectional view, on an enlarged scale andpartly in elevation, of a portion of my improved lock in its preferredform, the parts being shown in the position they assume when the outerknob is unlocked;

Fig. 2 is a similar view but with the parts shown in the position theyassume when the outer knob is locked; and

Figs. 3 and 4 are sectional views respectively taken on the lines 3-3and 44 of Fig. 1.

The lock illustrated in the drawings is of the type of the one describedand claimed in the patent to Byron Phelps, 626,341, dated June 6, 1899.

As shown, the lock is provided with an outer knob 2 having a spindle 4,an inner knob 6 having a spindle 8, a casing or frame I, and escutcheons9, which parts correspond respectively to the outer knob E, spindle e,inner knob D, spindle d, casing or frame A, and escutcheons C, of thelock of said Phelps patent. A roll-back Ill is mounted on a rod I2,whereby upon turning the rod the roll-back may be turned so as to actthrough suitable devices to retract the latch-bolt (not shown). Also,mounted on th rod I2 is a roll-back I4 which upon turning the outer knobis adapted to retract the latch-bolt. Said rollback IEI, rod I2, androll-back I4, correspond respectively to the roll-back F, rod G, androll-back K of the lock of said Phelps patent. Upon shifting the rod I2axially in an outward direction, the roll-back I4 is moved into positionto lock the shank 4 from turning so as to lock the outer knob from beingturned to retract the latch-bolt, the shank being released upon shiftingthe rod in the opposite direction. To efiect these operations, theroll-back I4 is axially fixed to the rod I2 and rotatable with relationthereto, and the roll-back i is rotatably fixed to said rod and movableaxially with relation thereto. The rod is adapted to be thus shifted bymanually operable means from the inner side of the door.

Thus when the door is closed, upon shifting the rod I2 outwardly by saidmanually operable means, the outer knob may be locked so that thelatch-bolt can only be retracted from the outside of the door by meansof a key, and upon shifting the rod in the opposite direction the outerknob may be released so as to permit it to be returned to retract thelatch-bolt.

1 Claim. (Cl. 292-1) Except as hereinafter described, the parts abovereferred to may be substantially thesame as the corresponding parts ofthe lock of said Byron Phelps patent.

In accordance with the present invention the manually operable means forshifting the rod [2 is simple in construction and easily andconveniently operated. As shown the inner knob end of the rod I2 issecured by means of a pin I6 in a recess in a cylindrical head l8 whichextends into a sleeve 20. This sleeve is made in two parts which have atongue and slot connection between them so as to cause them to turntogether and enable them to be separately mounted. The sleeve 20 ismounted to turn in the outer end of the knob spindle 8, and is held fromaxial movement with relation to the knob spindle by being interposedbetween a shoulder 22 in the knob spindle, and a shoulder 24 in theknob. The knob 6 is made hollow and is screw-threaded on a flange 26 onthe spindle 8. A collar 28 is positioned between the end of the shankand the hollow shell of the knob 6, this collar surrounding and forminga bearing for the outer portion of the sleeve 20. The outer end of thesleeve 20 has an end wall 30. A turn button 32 is secured to the endwall 30 by means of a screw 34 and a tongue 35 which is received in atransverse slot in the end wall. The shank 36 of the button 32 extendsthrough an aperture in the wall of the knob. The knob is provided with arecess 38 which receives the inner portion of the button, and is ofsufiicient diameter to permit the button to be easily grasped by thefingers.

A coiled expansion spring 40 is interposed between the end wall 30 andthe end of the rodhead l8 so as to press the rod I2 outwardly. The headI8 carries a transverse pin 42 which engages a cam surface 44 on theinner part of the sleeve 20, the cam surface limiting the inwardmovement of the rod l2 by action of the spring 40.

With this construction, upon turning the turnbutton 32 ninety degrees ina clockwise direction from the position shown in Fig. 1 to that of Fig.2, the sleeve 20 is turned therewith, and the cam surface 44 thereofpermits the spring 40 to shift the rod I2 to move the roll-back I4 intoposition to lock the outer knob as above described. Upon turning thebutton 32 in the opposite direction to return it to the position shownin Fig. 1, the rod I2 is shifted in the opposite direction so as to movethe roll-back I4 to release the outer knob.

It will be noted that the parts of the device including the rod I2,sleeve 20, and spring 40, may

be easily assembled in the knob, and when as some departing from thespirit thereof or the scope 0 f g the appended claims.

WhatIclaimis:

T In a lock of the class describedhaving inner and outer knob spindles,and meanscomprisinga roll-back and a rod adapted to be moved axially inopposite directions to move the roll-back to lock and unlock the outerknob, the improvement which comprises a sleeve mounted to turn in the ;i;nner knob spindle and held from-axial movement therein aspringinterposed between the outer end of, said sleeve-and the end ofthe-rod for urging said rod axially in one direction, said sleeve 4having a cam surface, a pin secured to said rod and engaging said camsurface whereby upon turning said sleeve in one direction said camsurface acts on said pin to move said rod axially in one direction andupon turning said sleeve in the opposite direction said cam surfacepermits the spring to move said rod axially in the opposite! direction,and a turn-button secured to said sleeve and accessible from theoutsideoi. said inner knob for turning said sleeve.

ERNEST L. TEICH.

REFERENCES CITED aIhe following:references are of record in the file ofthis'patentz' "{UNITEDSTATES PATENTS Number Name Date 471526341 PhelpsJune 6, 1899 631,434 Phelps Aug. 22, 1899 1,3954% n um a .Nov. 1, .19211,931,239 S chIa ge; QT- I NOV. 20, 1934 f v 'r'. r

